JP2002034605A - Shoe sole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shoe sole which prevents lateral swinging, promotes natural walking and running, provides comfortable feeling to wear, and is excellent in nonskid and stable quantity when walking and running. SOLUTION: On the undersurface of a midsole 1 which is formed of an expanded foaming body softer in cushioning properties than a circumferential edge tape section 12, the main body 11 is laminated with an arch supporting piece 4 which is formed of a semi rigid rubber in one piece comprising a longitudinal belt-like arch supporting piece 41 that runs from a heel to the front end along a middle axis in the longitudinal direction of the midsole, a first transverse belt-like supporting piece 42 that corresponds to a portion connecting a first cuneiform to a cuboid end, and a second transverse arch supporting piece 43 that corresponds to a foot bowl girth. On the undersurface of a front sole section of the midsole 1, a hard inner fringe section of ground facing sole 21 is laminated corresponding to the circumferential edge tape section 12 except the arch supporting piece 4 section, and cleats 22, 22, etc., for preventing a slip which are formed of a rubber lower in hardness than the arch supporting piece 4 are mounted inside the hard inner fringe section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole, particularly a shoe sole suitable for sports shoes such as walking shoes and running shoes.

[0002]

2. Description of the Related Art Conventionally, a flat shank made of steel is attached to a sole portion corresponding to a calcaneus to a metatarsal bone to support an arch portion in a longitudinal direction of a foot during walking and running. Stability over time is generally known.

[0003] In normal adult walking and running with human bare feet, Japanese Patent Application Laid-Open No. H10-10870 according to the prior application of the applicant has been disclosed.
As shown in No. 4, a vertical arch along the long axis of the foot,
That is, a vertical arch from the posterior part of the calcaneus to the head of the second metatarsal bone, and two lateral arches in the lateral direction of the foot, that is, a first arch from the first wedge bone to the tip of the cuboid bone. A walking arch while absorbing a landing impact pressure due to weight load by a horizontal arch and a second horizontal arch composed of a ball portion from the head of the first metatarsal to the head of the fifth metatarsal. is there. And in the walking running process, the weight load is first loaded on the heel back surface of the foot while pronation from the outside to the inside of the heel portion, and then from the heel back surface to the front along the back surface of the foot in the longitudinal direction of the foot. The ball of the first finger is deflected on the back surface of the ball portion of the fifth finger, that is, the back surface of the joint portion of the fifth metatarsal bone and the fifth base phalanx. While rolling to the joint back surface, that is, the joint back surface of the first metatarsal bone and the first base phalanx, the foot is moved by stepping on the ground, and then the first base phalanx and the first distal phalanx are warped and pitched. While repeating the process of forcibly gripping the ground with the back surface of the first distal phalanx (the first finger) and kicking the ground with the first to fifth fingers, especially the 1.2.3 finger, the walking traveling, so-called " It is said that the robot walks.

In recent years, shoe soles made of cushioning elastic foam have been awarded in walking shoes and running shoes from the viewpoint of cushioning properties and lightness of shoes during walking or running.

[0005] However, when walking and running while wearing these shoes with cushioned elastic foam soles, a dynamic weight corresponding to a weight of 1.2 to 3.0 times on the outside of the heel at the early stage of landing. A load is imposed, which, in combination with the cushioning of the sole, causes the outer heel to be rapidly compressed, and the subsequent rapid elastic recovery forces the heel of the foot in the shoe to be excessively prone, i.e. In the next walking or running process, the outer side of the tread portion of the shoe sole is excessively compressed, causing overspinning at the tread portion, and muscles and ligaments of the feet and legs. It is said to cause joint damage. In addition, the muscles and ligaments of the walking or running feet for a long time become fatigued, and the above-mentioned vertical arch and the first horizontal arc are caused.
It is said that the lowering of the second lateral arches of the ball and ball portions lowers the absorption of landing impact pressure and promotes flat feet and hallux valgus. I have. Also, in normal walking or running, from the landing operation of the heel portion with the pronation effect to the landing on the outer side of the tread portion with the spinning effect, that is, the fifth finger ball portion, the heel portion of the foot. The torsion of the foot from to the tread is restrained by the shank in the shoe sole with the conventional shank,
There was a drawback that normal walking or running was hindered.

[0006]

SUMMARY OF THE INVENTION The present invention prevents lateral deflection of the sole during walking or running, and achieves overpronation at the inner side of the heel and overover at the outer side of the tread portion. -To prevent spinning and to support the vertical and two lateral arches of the foot during walking, running or standing for a long time, to reduce the shock absorption due to the flattening of the arch. Flat feet of the foot, preventing hallux valgus formation, allowing moderate kinking in the vertical arch, promoting rolling in the tread, that is, the second horizontal arch, and rolling, Another object of the present invention is to provide a shoe sole that prevents slippage when stepping on, promotes natural walking and running, has good comfort, and has excellent stability during walking and running.

[0007]

According to the present invention, a main body 11 is provided.
A belt-shaped vertical arch support piece 41 formed from the heel portion to the toe portion along the central axis L in the longitudinal direction of the intermediate bottom on the lower surface of the intermediate bottom 1 formed of a cushioning foam softer than the edge tape portion 12. And a band-shaped first horizontal arch support piece 42 formed at a portion corresponding to a portion connecting the first wedge bone of the foot to the tip of the cubic bone, intersecting with the vertical arch support piece 41, and a ball girth of the foot. An arch support piece 4 integrally formed of semi-hard rubber having a hardness of 60 to 75 degrees according to JISK6301 and a second horizontal arch support piece 43 formed along a portion corresponding to Arch support piece 4 on the lower surface of the front bottom of 1
Except for the intermediate bottom edge tape portion 12, a hard edge grounding bottom 21 corresponding to the intermediate bottom edge tape portion 12, and a rubber having a hardness lower than that of the arch support piece 4 according to JISK6301 corresponding to the intermediate bottom main body portion 12 inside thereof. Non-slip projection 22.2 formed of
2. . . The sole of the present invention is characterized in that the sole is laminated, and the main body 11 is formed on the lower surface of the intermediate sole 1 formed of a cushioning foam softer than the edge tape part 12, and the longitudinal direction of the intermediate sole is provided. Strip-shaped vertical arch support piece 4 formed from the heel to the toe along the central axis
1 and the first foot of the foot crossing the vertical arch support piece 41
A band-shaped first horizontal arch support piece 42 formed at a portion corresponding to a portion connecting the tip of the cuboid to the wedge-shaped bone, and a second horizontal arch support piece 43 formed at a portion corresponding to the ball girth of the foot An arch support piece 4 integrally formed of semi-rigid rubber having a hardness of 60 to 75 degrees according to JISK6301 is laminated, and an intermediate base 1 is provided on the lower surface of the front bottom of the intermediate bottom 1 except for the arch support piece 4. Edge tape part 12
, A hard edge grounding bottom 21 and a non-slip projection 22.22. . . On the lower surface of the heel bottom of the intermediate sole 1, the hardness according to JIS K6301 is 55 to 55 corresponding to the edge tape part 12 of the intermediate sole except for four arch support pieces.
The sole of the shoe according to the second aspect of the present invention is characterized in that a heel contact sole 23 integrally formed of rubber of 75 degrees is laminated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 5 showing an embodiment of the present invention, an intermediate bottom 1 is composed of a main body 11 and an edge tape portion 12, and 1
No. 1 is for maintaining the cushioning property and flexibility of the sole of a shoe during walking or running, and is based on a hardness according to JRIS-0101 (a hardness according to a compression hardness test according to the Japan Rubber Association Standard on Physical Testing Methods for Expanded Rubber, a so-called hardness). C hardness) is 4
0-60 degree cushioning natural rubber, polybutadiene rubber, polyisoprene rubber, styrene butadiene rubber,
Desirably, it is composed of a soft cushioning synthetic resin foam formed mainly of synthetic rubber such as olefin rubber such as EVA, EPT, EPDM, etc., PVC, polyurethane or a mixture of two or more of these. In addition, the edge tape portion 12 is for preventing lateral deflection of the shoe sole during walking or running, and is harder than the main body portion 11, preferably natural rubber, polybutadiene rubber, polyisoprene having a C hardness of 60 to 75 degrees. Rubber, styrene butadiene rubber, E
It is made of synthetic rubber such as olefin rubber such as VA, EPT, EPDM, etc., PVC, polyurethane or a foam formed mainly of a mixture of two or more of these. If the hardness of the edge tape portion 12 becomes softer than the above, the heel portion and the tread portion cannot sufficiently prevent the lateral run-out, and there is a dislike that the stability decreases, and the hardness of the main body portion 11 is harder than the above. If this is the case, there is a dislike that the cushioning property during walking or running and the flexibility of the shoe sole are reduced and the comfort is reduced. The main body 11 and the edge tape 12 may be adhered by an adhesive, or may be baked or melt-integrated during molding.

The lower surface of the intermediate sole 2 is formed from the heel to the toe along the central axis in the longitudinal direction in order to support the vertical arch of the foot and prevent the vertical arch from flattening. A strip-shaped first horizontal arch support piece 41 is formed at a portion corresponding to a portion connecting the first wedge-shaped bone to the tip of the cubic bone of the foot crossing the vertical arch support piece 41. In order to support the second horizontal arch of the foot when wearing shoes and prevent the second horizontal arch of the foot from being flattened, the second horizontal arch support piece 43 is naturally provided at a portion corresponding to the ball girth of the foot. Rubber, polybutadiene rubber, polyisoprene rubber, styrene butadiene rubber, synthetic rubber such as olefin rubber such as EVA, EPT, EPDM, or a mixture of two or more of these rubbers as the main component. That hardness 60-75 degrees of enhancement rubber arch support piece 4 which is excellent in impact resilience of semirigid are stacked. In addition, JISK6 of arch support piece 4
The resilience modulus of 301 is preferably 35 to 75%. If the rebound resilience is less than that, the torsional recovery force of the vertical arch support piece 41 when the torsion is twisted from the inside of the heel of the foot to the outer side of the tread during normal walking or running, and treading When the part rolls,
2, the bending recovery force of the horizontal arch piece 43 is reduced, and there is a dislike that walking or running stability is reduced with this. Also, if the rebound resilience is greater, the vertical arch piece 41 during walking or running, When the first and second horizontal arch pieces 42 and 43 are compressed by weight load, the resilience of the first and second horizontal arch pieces 42 and 43 becomes too large, and there is a tendency that walking or running stability is reduced.

Further, except for the arch support piece 2, the front bottom surface of the intermediate sole 1 is hard corresponding to the intermediate bottom edge tape portion 12 in order to prevent the shoe sole from swaying during walking or running. The edge grounding bottom 21 preferably has a C hardness of 6
An edge grounding bottom 21 made of a foam of 0 to 80 degrees has a gripping property, that is, a gripping property, of the shoe sole from the tread portion to the toe portion on the ground corresponding to the intermediate sole body 11 inside. Therefore, JIS hardness is lower than the arch support piece 4, preferably natural rubber having a JIS hardness of 50 to 65 degrees,
Non-slip projections 22.2 composed of synthetic rubber such as polybutadiene rubber, polyisoprene rubber, styrene butadiene rubber, olefin rubber such as EVA, EPT, EPDM, or a mixture containing two or more of these rubbers as a main component.
2. . . Are laminated. Non-slip projection 22.2
2. . . Is formed softer than the edge grounding bottom 21 and protrudes higher than the arch support piece 4 toward the ground.
At the time of contact with the ground, the elastic recovery force of the compressed intermediate bottom body 11 and the rebound resilience of the arch support piece 4 can be combined to further improve the grip on the ground. It is possible to improve the kicking operation with respect to the ground toward the toe, which is convenient.

In the second aspect of the present invention, except for the lower part of the heel portion of the intermediate sole 1 and the four arch support pieces, the heel contact bottom 3 formed in correspondence with the intermediate bottom edge tape portion 12 is a heel contact bottom. To provide anti-slip properties and abrasion resistance at the time of
Natural rubber having S hardness of 55 to 75 degrees, polybutadiene rubber, polyisoprene rubber, styrene butadiene rubber, E
It is mainly composed of synthetic rubber such as olefin rubber such as VA, EPT and EPDM, PVC, polyurethane or a mixture of two or more thereof. In the invention of claim 2, if the outer side 31 of the heel contact floor 3 is formed to be harder than the inner side 32, the compressibility of the outer side of the heel is further suppressed and the overheeling of the heel is further prevented. It is a target.

[0012]

Since the present invention is configured as described above, when walking or running while wearing shoes using the sole of the present invention, the vertical arch of the foot and the two horizontal arches have rebound resilience. It is always supported by the excellent arch support piece 4, and the foot arch does not become flat when walking, running or standing. In addition, in the walking or running process, the shoe sole first lands on the outside of the heel of the sole in response to the movement of the weight load on the sole, and protrudes toward the inside of the heel while extending over the inside of the heel. Landing on the heel. At this time, when the heel portion is to be over-provisioned at the inner portion of the heel portion, the edge tape portion 12 of the intermediate sole 1 is formed of a foam harder than the main body portion 11 at the outer portion and the inner portion of the heel portion. The first lateral arch support piece 42 located on the lower side of the first lateral arch in front of the heel portion of the foot without being excessively compressed on the outer side and the inner side. In combination, the over-pronation of the heel is prevented. Next, when the weight load moves from the inner side of the heel to the fifth finger, that is, the outer side of the tread portion, the first lateral arch piece 42 of the shoe sole is used.
The first horizontal arc extends from the central portion 420 of the
The first arch support piece 42 bends, the vertical arch support piece 41 buckles outward in response to free movement of the foot, and the second horizontal arch support piece 43 deflects at its outer side 431 to reduce the weight pressure. The edge tape portion 12 is formed to be harder than the main body portion 11 at the outer portion of the intermediate sole at the stage when the weight pressure has completely moved to the outer portion of the tread portion of the shoe sole, moving to the outer side portion of the attachment portion,
In addition, the fact that the edge grounding bottom 21 is formed rigidly at the outer periphery, the elastic recovery force of the bent first horizontal arch support piece 42 and the vertical arch support piece 41 that is twisted outward,
Due to the elastic recovery force of the deflected second lateral arch support piece 43, the weight pressure load is applied to the outer side of the tread portion of the shoe sole in the inward direction of the tread portion of the shoe sole, that is, the first finger pad. -Works to pull back in the direction of the rule. Therefore, the contact at the outer side of the tread portion
Bar spinning is avoided, and rolling from the outer side to the inner side of the tread portion of the shoe sole is promptly promoted. When rolling, the elastic recovery force of the second horizontal arch piece bent from the outer side 431 to the inner side 432 and the intermediate bottom body 11 are made of a cushioning foam softer than the edge tape 12. In combination with this, the kicking operation of the toe can be smoothly performed without the ball portion of the first finger being excessively dropped.
During rolling, the anti-slip projections 22.22. ... is pressed against the ground, preventing slippage during rolling and stepping.

[0013]

As described above, the present invention prevents lateral deflection of the shoe sole when walking or running, and achieves the overpronation at the inner side of the heel and the outer side at the outer side of the tread portion.
In addition to preventing burspination, vertical walking or running, or standing,
H and two lateral arches are supported, to prevent a decrease in shock absorption due to the flattening of the arch, a flat foot of the foot, and a hallux valgus.
Allow a moderate kinking in the vertical arch, and
In addition to promoting rolling at the side arch section of the vehicle, it also prevents rolling and sliding when stepping on, promotes natural walking and running, has good comfort, and has excellent stability when walking. Can provide the sole. Further, in the second aspect of the present invention, the heel contact bottom 3 provides wear resistance and anti-slip property when the heel part lands.

[Brief description of the drawings]

FIG. 1 is a sketch of a shoe sole according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 1;

FIG. 5 is a sectional view taken along line D-D in FIG. 1;

[Explanation of symbols]

1. Intermediate bottom, 11 ... body part, 12 ... edge tape part, 2
1. Edge ground bottom, 22. 2. non-slip projection 3. heel contact bottom, 31 ... outer side, 32 ... inner side, Arch support piece, 41 ... vertical arch support piece, 42 ... first
Horizontal articulator port piece, 420 ... Central part, 421 ...
Outer side part 43, second horizontal arch support piece 43
1 ... outside edge, 432 ... inside edge

Claims (2)

[Claims] 1. A main body 11 is formed from a heel portion to a toe portion along a central axis in a longitudinal direction of an intermediate bottom on a lower surface of an intermediate bottom 1 made of a cushioning foam softer than an edge tape portion 12. A strip-shaped vertical arch support piece 41,
A strip-shaped first horizontal arch support piece 42 formed at a portion corresponding to a portion connecting the first wedge bone of the foot to the tip of the cubic bone while intersecting with the vertical arch support piece 41, and corresponding to the ball girth of the foot The hardness according to JISK6301 consisting of the second horizontal arch support piece 43 formed at the portion where
Arch support pieces 4 integrally formed of 75-degree semi-rigid rubber are laminated, and on the lower surface of the front bottom of the intermediate bottom 1, except for the arch support pieces 4, corresponding to the intermediate bottom edge tape portion 12, A hard edge grounding bottom 21, and a non-slip projection 2 made of rubber whose hardness according to JISK6301 is lower than that of the arch support piece 4 corresponding to the intermediate bottom main body 12 inside thereof.
2.22. . . Shoe soles characterized by being laminated. 2. A body portion 11 is formed from a heel portion to a toe portion along a central axis in a longitudinal direction of the intermediate bottom on a lower surface of the intermediate bottom 1 formed of a cushioning foam softer than the edge tape portion 12. A strip-shaped vertical arch support piece 41,
A strip-shaped first horizontal arch support piece 42 formed at a portion corresponding to a portion connecting the first wedge bone of the foot to the tip of the cubic bone while intersecting with the vertical arch support piece 41, and corresponding to the ball girth of the foot The hardness according to JISK6301 consisting of the second horizontal arch support piece 43 formed at the portion where
Arch support pieces 4 integrally formed of 75-degree semi-rigid rubber are laminated, and on the lower surface of the front bottom of the intermediate bottom 1, except for the arch support pieces 4, corresponding to the intermediate bottom edge tape portion 12, A hard edge grounding bottom 21, and a non-slip projection 2 made of rubber whose hardness according to JISK6301 is lower than that of the arch support piece 4 corresponding to the intermediate bottom main body 12 inside thereof.
2.22. . . The bottom surface of the heel sole of the intermediate sole 1 is formed of rubber having a hardness of 55 to 75 degrees according to JISK6301 corresponding to the intermediate bottom edge tape portion 12 except for the arch support pieces 4 except for the arch support pieces 4. 23. A shoe sole, wherein 23 are laminated.